Man-Yi clocked sustained wind speeds of up to 112 miles per hour as it slammed into Naha, the prefectural capital of Okinawa, the Meteorological Agency said.

The typhoon was moving northward at a speed of 12 miles per hour and was forecast to hit the southern main island of Kyushu on Saturday, the agency said.

It is expected to then rake the Japan's Pacific coast toward Tokyo, but the agency did not say if the typhoon would hit the capital.

About 60,000 households were without power — 11 percent of all households in Okinawa, according to Tomoko Sunagawa, an official of Okinawa Electric Power Co. It was not immediately clear when power would be restored.

"It is raining hard and the wind is very strong. It looks all white outside," Sunagawa said by phone from Naha.

Airlines have canceled more than 300 flights to and from Okinawa and Kyushu, according to Kyodo News agency.

Heavy rain falling at a rate of more than 2 inches an hour inundated Kyushu Friday morning, the Meteorological Agency said. The agency warned of heavy rains, high waves, and strong winds. Up to 20 inches of rain was expected to fall on Kyushu by noon Saturday, it said.